Typewriter attachment



Aug. 14, 1934. L. JENSEN' TYPEWRITER ATTACHMENT Filed Jan. 15. 1935 .2 Sheets-Sheet 1 jzveizz a'rl .Loazafmse Aug. 14, 1934. L. JENSEN LWU BM TYPEWRITER ATTACHMENT Filed Jan 15, less 2 Sheets-Sheet 2 .1 71111111111111 III/1111111111111 IIIIIIIIIIJ IIIIIIAVIIIIII/IIIIIII/IIIYIIIIIIIIIIK I.

Patented 14, 1934 PATENT OFFICE 1 1,970,314 TYPEWRITER ATTACHMENT Louis Jensen, Chicago, IlL, assig'nor to United fiiiifiigraphic Register 00., a corporation of Application January-13, 1933, Serial No. 651,592 9 Claims. (Cl. 197-126) This invention relates particularly to typewriters adapted to the purpose of filling in forms on continuous-form stationary, and more particularly to an attachment for facilitating the shifting of a carbon pack from a filled set of forms to a succeeding set of forms.

The present invention is an improvement on the device shown in my co-pending application,

Serial No. 571,747, filed October 29, 1931. The primary object is to provide improved means for holding the continuous-form stationery so that it will notbe necessary for the o'perator to reach very high above the machine to retract interleaved transfer sheets from an advanced to succeeding set of forms. In the present invention the stationery holding 'means is in the form of a telescopic standard which need only be extended during the transfer sheet retracting operation.

after a set of forms has been filled in, the end of the strips advance into engagement with a paper clip, and upon release of the platen pressermeans, the operator may grasp a handle extending downwardly from the paper clip and advance the forms into a position where the carbon sheets may be retracted from the advance set of forms into interleaved relation with the next set of forms. The freshly loaded set of forms may then be retracted to writing position by means of the platen roll and associated presser-means, the paper clip being drawn downwardly to the end of its travel and allowing the stationery to slip from its grasp. The completed set of forms may then be detached.

The invention is illustrated in. a preferred embodiment in the accompanying drawings, in

Fig.1 is a front elevational view of .a machine embodying the invention; Fig. 2, a side elevational view of the same; Fig. 3, a broken section- 9.1 view taken as indicated at line 3 of Fig. 1; Fig. 4, a fragmentary sectional view showing the standard supporting means, taken as indicated at line 4 of Fig. 3; Fig. 5, perspective view of the improved device; Fig. 6, an enlarged vertical sectional view of the paper clip taken as indicated at line 6 of Fig. 'I; Fig. 7, a sectional view taken as indicated at line 'I of Fig. 6; Fig.

0 8, a sectional view taken as indicated at line 8-8 of Fig. 6; Fig. 9, a broken longitudinal sectional view of the telescopic standard; Fig. 10,'

a fragmentary elevational view of the spring catch which holds the extensible portion of the 05 standard; and Fig. 11, a modified form of the Inaccordance with the present invention,

adapter-bracket which enables the device to be attached to various standard makes of typewriters.

In the embodiment illustrated, A designates a main frame of a typewriting machine; B, a shiftable platen carriage having a platen B, and a tabulating rock-bar B upon which the attachment is mounted; C, a stationery supporting device having rearwardly extending guide frame C, and adapter-brackets C and D, a telescopic standard. equipped with an extensible member D having at its upper end a downwardly projecting handle D and a paper clip D The typewriter A .and shiftable carriage B may be of the conventional type provided with a platen roll B and a tabulating rack-bar which is usually equipped with adjustable stops for use in connection with tabulating operations on the typewriter. 4

The attachment C may be in the form of a loop, preferably made of a flat bar whose end portions 12 are turned upwardly and may be clamped together by means of a screw 13 equipped with a finger nut 13. The guide frame C may have a central standard 14 spot welded, or otherso wise rigidly mounted on the loop C, and supports a U-form guide 15 at its rear portion by means of a clamp 14 and bolt 16. The lower portion of the loop C is equipped with a series of tapped holes 17 which enable various forms of adapter brackets C to be attached thereon. Preferably, the adapters are fastened to the frame C by means of thumb screws 18 and sliding keepers 19. The lower end of the adapters are of U-form, so as to slip over the tabulating bar D and are equipped withset screws 20 so that they may be rigidly mounted thereon.

It will be understood that the standard form of device may be mounted on practically-any of the various makes of typewriters by merely employing the proper adapter brackets C". In Fig.

11, a modified form of bracket C is shown which permits the device to be mounted on a machine whose tabulator bar is in a higher position than that shown on the typewriterillustrated in Figs. 1-3.

The .telescopic'standard D is equipped with a rigidly connected supporting bracket 21 having reenforcing ribs 21 and a slot in its end portion 21 adapted to slip over the screw 13 so assume the same angle with respect to the frame vided with ,a stop 23 which engages the lower end of the marginal portions 22 of the standard D. A leaf spring is fastened to the inside of the channel D by means of rivets 25 and the lower end portion of the spring is provided with a projection 25 which is adapted to snap under the stop23 and yieldingly hold the member D in its uppermost position. The upper end of the spring 25 is adapted to bear against the inner side of the channel B and apply friction thereto.

The handle-member D may be formed of heavy wire, if desired, and the lower end 26 may be in the form of an outwardly extending loop which is adapted to serve as a guide and hold the paper along the standard D. The upper portion 27 may be in the form of a yoke having its end portions 27 bent rearwardly and inwardly to form a pivotal connection with the member D. If, for any reason the handle D is not desired, it may be swung over the top of the standard D or may be removed by simply spreading the yoke 2'7.

A sleeve 30 is crimped around the upper end portion of the member D and forms a stop which abuts against the upper end portion of the standard D. The upper rear portion of the Y sleeve 30 may be cut away at 30 to permit the paper clip D to engage the member D.

- The paper clip D has its base portion 31 looped around the member D and extends outwardly and downwardly to provide a journal 31- and stops 31 The cap screw 32 extends through a tapped hole in the base 31 and screws against the member D. A hollow guide member 33 is provided with trimnions 33 which extend through the journals 31. A plunger 34 is provided with a shank 34 'which extends through the guide 33 and is threaded at itsouter end and engaged by thumb screw 35. A spring 36 is interposed between a shoulder of the plunger and the guide 33 so as to urge the plunger downwardly towards the sleeve 30. Preferably, the plunger 32 is of square cross section so as not to turn with relation to the guide 33. The plunger is further proa boss 34 which is engaged by a compression spring 37 and urges the plunger against the stop 31. The upper end of the spring 37 is engaged by a pair of fingers 31 which are struck inwardly from the member D.

It will be understood that when paper strips 40 are projected upwardly into the jaws of the paper clip, the plunger 34 will be swung upwardly against the slight compression of the spring 3'1. However, when the strips are withdrawn the plunger is urged downwardly therewith and exerts a snubbing action which requires considerable force to overcome. This toggle-like movement compresses the spring 36, but if sufficient tension is exerted on the strips, they may he slipped out of the grasp of the device. The device may be adjusted to accommodate various thicknesses of paper by movement of the nut 35 which may be held in a desired position by lock washer 35.

Operation Preferably, the extensible member D is retracted while a set of forms are being filled in so that it will not be swinging in the air due to the abrupt movements of the typewriter carriage. As the sets of forms 40, loaded with transfer operator then engages the platen presser-means and backs the loaded set of forms into writing position. This force will be sufiicient to retract the extension D until the sleeve 30 engages the end of the standard D. Continued rearward movement of the platen will be suflicient to withdraw the ends of the strips from engagement with the member D One of the principal advantages of the present construction is in that the operator does not have to reach two forms lengths above the platen in using the device, as was the case when the earlier forms of device were employed. In case it is desired to place a cover over the typewriter or move the machine into a typewriter desk, the standard D may be removed by simply loosening the thumb screw 13'.

The foregoing detailed description is givenfor cleamess of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new and desire to secure by Letters Patent is:

ing of transfer sheets comprising a standard mounted on said carriage having a fixed section and an extensible section, said extensible section being provided with a downwardly extending arm adapted to serve as a guide for the stationery and as an actuating handle; and gripper means on the end portion of said extensible section for releasably engaging the advance end of stationery advanced beyond said platen.

2. In combination with a typewriting machine provided with a shiftable carriage having a platen roll and a transversely disposed tabulating rackbar mounted therein: a standard mounted on said rack-bar comprising a fixed section and an extensible section slidably mounted on the fixed section; a paper clip on the upper portion of said extensible section for grippin stationery advanced beyond said platen; and a downwardly extendingguide-arm, mounted on said extensible section near said clip, and adapted to serve as an actuating handle for said extensible section.

3. In combination with a typewriting machine having a shiftable carriage provided with a platen roll and tabulating rack bar, a stationery supporting device comprising: a loop-shaped base member provided with a rearwardly extending stationery guide frame and a pair of adapter-brackets for engaging said tabulating rack-bar; and a centrally disposed telescopic standard mounted on the base-member, said standard having a a slidably mounted keeper.

5. A strip-gripping devicecomprising: a C-' frame; and a snubbing arm comprising a guidemember pivotally mounted in the end portion of one of the jaws of saidframe,a slide-member carried by said guide-member, a spring urging said slide-member downwardly, and an adjusting screw for limiting the downward travel 01' said slide-member. 1

6. A sheet-gripping device comprising: a basemember having an overhanging arm; a guidemember having trunnions journaled in said arm; a plunger slidablyimounted in said guide, said plunger being provided with an adjusting-nut to limit its travel towards the base-member; a spring urging said plunger towards said basemer'nber; and another spring tending to swing said plunger about said trunnions.

7. In combination with a typewriting machine equipped with a ,shiftable carriage having a platen roll and associated presser-means mounted therein; a telescopic standard mounted on said carriage having a fixed section and an extensible section mounted thereon; spring means adapted to hold yieldingly said extensible member in extended position; a stop for limiting the downward travel of the extensible member; and papergripping means adapted to engage the advance end of stationery advanced beyond said platen,

, I 1,970,314 the adapter-brackets are each attached to said paper-gripping means beingadapted to grip the stationery sui iicient'ly to cause the extensible member to be retracted against said stop when the paper is retracted around said platen and upon further retraction of the stationery to permit said stationery to slip from its grasp.

8. In combination with a typewriting machine provided with a shiftable carriage having a platen roll mounted therein: means for facilitating the shifting of transfer sheets comprising a standard mounted on said carriage having a fixed section and an extensible section, gripper-means on the end portion of said extensible section for releasably engaging the advance end of stationery advanced beyond said platen, and an automatically releasable spring catch for holding the extensible section in extended position, said catch providing less resistance to retraction of the ex-' tensible section than the gripper-means exerts on the stationery so that the extensible section may be retracted by said stationery. v

9. A strip-gripping device comprising: a 6- frame; a snubbing arm oscillatably mounted in one of the jaws of said frame, a spring urging extension of the snubbing arm against the opposite Jaw of the frame, and a second spring urging oscillation of said arm into contact with said opposite jaw.

LOUIS JENSEN. 

